This broken slab was found at Ballavarkish keeill (IOMHER 0402.00) during excavations undertaken by the Manx Archaeological Survey in 1912. The surviving portion bears a 'Celtic' cross and ring set within a rectangular panel. It would originally have served as the front panel of an altar. The soft stone has been the target of pilgrims' graffiti, and is marked with Christian symbols - birds' heads, a monk, a lamb, and several small crosses followed by Celtic men's names which are rendered in Latin form: Lugni, Diprui, Maborai and Condilici.


The crosses are regarded as invocation to pray for the individual whose name follows. These graffiti would have been carved during vigils or devotions in front of the altar by clerics and visiting pilgrims, and shows that these people were literate in Latin. The original stone is on display at the Manx Museum.